When I reviewed JBL’s monster flagship party speaker ... speaker came out of the box almost fully charged. The battery will fully charge in three hours and a 10-minute quick charge can ...

Starting with the biggest of the bunch, the PartyBox 520 adds a new power entry to JBL’s top three ... The 520 wouldn’t be a party speaker if it didn’t have karaoke features like inputs ...

Featuring JBL ... karaoke experience, while the PartyBox Encore Essential 2 will brighten any gathering with its dynamic lightshow. With up to a 15-hour battery life and a quick 10-minute charge ...